How many teams in the NFL which had the best regular season record went on to win the Super Bowl that year?

Answer 1

Of the 40 Super Bowl champions, 21 were the team with either the best record or tied for the best record in the league during the regular season (in Green Bay's case for Super Bowl I, they had the best record in either league)

Green Bay 1966 (12-2, Super Bowl I)
Dallas 1971 (tied with Minnesota for best at 11-3, Super Bowl VI)
Miami 1972 (14-0, Super Bowl VII)
Miami 1973 (tied with Minnesota and Los Angeles for best at 12-2, Super Bowl VIII)
Pittsburgh 1975 (tied with Minnesota and Los Angeles for best at 12-2, Super Bowl X)
Oakland 1976 (13-1, Super Bowl XI)
Dallas 1977 (tied with Denver for best at 12-2, Super Bowl XII)
Pittsburgh 1978 (14-2, Super Bowl XIII)
Pittsburgh 1979 (tied with San Diego for best at 12-4, Super Bowl XIV)
San Francisco 1981 (13-3, Super Bowl XVI)
Washington 1982 (tied with LA Raiders at 8-1, Super Bowl XVII)
San Francisco 1984 (15-1, Super Bowl XIX)
Chicago 1985 (15-1, Super Bowl XX)
NY Giants 1986 (tied with Chicago for best at 14-2, Super Bowl XXI)
San Francisco 1989 (14-2, Super Bowl XXIV)
Washington 1991 (14-2, Super Bowl XXVI)
Dallas 1993 (tied with Buffalo and Houston for best at 12-4, Super Bowl XXVIII)
San Francisco 1994 (13-3, Super Bowl XXIX)
Green Bay 1996 (tied with Denver for best at 13-3, Super Bowl XXXI)
Tampa Bay 2002 (tied with Philadelphia and Green Bay at 12-4, Super Bowl XXXVII)
New England 2003 (14-2, Super Bowl XXXVIII)